【作者】 牛钰莹； 崔新春； 李倩； 丁家琳；

【Author】 Yuying Niu;Xinchun Cui;Qian Li;Jialin Ding;School of Communication,Qufu Normal University;School of Information Science and Engineering,Qufu Normal University;

【机构】 曲阜师范大学传媒学院； 曲阜师范大学信息科学与工程学院；

【摘要】 本文提出一种基于SVD的DWT域彩色图像水印算法。首先,利用Arnold置乱技术对水印图像进行预处理以提高水印算法的安全性。其次,对原始图像进行二维离散小波分解,将分解后提取图像蓝色分量子图系数的低频部分进行奇异值分解。然后,将水印图像对应的奇异值嵌入到原始图像中。仿真实验结果表明,本文提出的水印算法具有较高的水印嵌入容量,在保证较好的算法不可见性的同时,对噪声、压缩、剪切、旋转等常见攻击表现出较强的鲁棒性。更多还原

【Abstract】 A color image watermarking algorithm based on SVD and DWT is proposed.Firstly,watermark image is preprocessed by Arnold transform to improve algorithm security.Secondly,the low-frequency component of blue sub-graph coefficients extracted from a host image decomposed by 2-DWT is analyzed by SVD.Then,the corresponding singular value of watermark image is embedded into the host image.Simulation results show that proposed method,guaranteeing algorithm high embedding capacity,has better performance in terms of invisibility and improves robustness significantly against a variety of noises,compression,shear and rotation,etc attacks.更多还原